mmm Argentina has its own dialect... I'm spanish but still I use my own dialect, so don't trust any spanish-speaker in general about the tilde-acento matter

Yup, spanish developed diferent dialects (

) in its colonies... so you might add some "colonial" spanish languages... but I'm not sure about the idea...
Also, you should add things like low german, bavario-austrian language, low-saxon in the netherlands, firisan and you should delete Norwegian... After all, until the XV century most kings were swedish and after that many of them were danish... until they were swedish again

And indeed, norwegian is very vague... there is a language called bokmal and another one called nynorsk.
But I'm not an expert on germanic thingies (yet) so I might be wrong and perhaps norwegian did exist in the XV century

EDIT: Also, I'd love to see the faroese as a language and to extend it everywhere

Maybe you might add a decision to extend certain language in the administration and your provinces?